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EP0379261B1 - Verfahren zur Erdboden-Reinigung - Google Patents

Verfahren zur Erdboden-Reinigung Download PDF

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Publication number
EP0379261B1
EP0379261B1 EP19900200125 EP90200125A EP0379261B1 EP 0379261 B1 EP0379261 B1 EP 0379261B1 EP 19900200125 EP19900200125 EP 19900200125 EP 90200125 A EP90200125 A EP 90200125A EP 0379261 B1 EP0379261 B1 EP 0379261B1
Authority
EP
European Patent Office
Prior art keywords
soil
water
withdrawn
air
supplied
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP19900200125
Other languages
English (en)
French (fr)
Other versions
EP0379261A1 (de
Inventor
Leonardus G.C.M. Urlings
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TAUW MILIEU B.V. TE DEVENTER.
Original Assignee
Tauw Infra Consult BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19853966&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0379261(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tauw Infra Consult BV filed Critical Tauw Infra Consult BV
Priority to AT90200125T priority Critical patent/ATE89199T1/de
Publication of EP0379261A1 publication Critical patent/EP0379261A1/de
Application granted granted Critical
Publication of EP0379261B1 publication Critical patent/EP0379261B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the invention relates to a process for the treatment of contaminated soil, wherein the soil to be treated is brought onto an impermeable base in a deposit, in a layer of a thickness of 1 to 2 metres, water or recirculated water, if desired with added nutrients is spread over the soil and from the bottom of the depot water is withdrawn from the soil by means of a drain-system.
  • the cleaning activity by conversion in the soil is promoted by such a process. Further the most mobile contaminants (mostly the most volatile ones) such as aromates, benzene, toluene etc. are washed from the soil by means of the liquid flow. During the starting period a water flux as high as possible is maintained. By recirculation and treatment of the water, the amount of water to be withdrawn is minimised.
  • the present process differs from the known process in that the present process uses a closed recirculation circuit for water. An excess of water can be purified before it is discarded. The present process thus has no adverse effect on the environment.
  • a further difference with the known process is that the present process requires no inocculation with special micro-organisms.
  • the installation/deposit requires no cover and the present process can be used with an other process for a combined air/water treatment.
  • the supply of water to the soil can for instance be performed efficiently by raining or irrigation of the deposit.
  • a forced air injection or air withdrawal can stimulate the biological activity in the soil. Further the remaining volatile contaminants can be removed by air withdrawal from the soil.
  • micro-organisms and/or extracts or detergents are supplied to the recirculated liquid.
  • the conversion of the contamination is promoted.
  • nitrogen and/or phosphate and/or further nitrogens are supplied to the recirculated water.
  • the application of a cover over soil to be treated can prevent the access of too much rain.
  • the conversion of undesired substances in the soil can be promoted by the addition of micro-organisms to the system for instance by addition to the recirculated water.
  • the soil is brought in a deposit in a layer of a thickness of for instance 1 to 2 m.
  • the basis can consist of an impermeable synthetic foil, onto which a layer of sand of about 30 cm is supplied, for instance of 20 to 40 cm, in which a drain system and an air injection system and/or air withdrawal system are present.
  • a drain system and an air injection system and/or air withdrawal system are present.
  • An example of such a system is given in Fig. 1.
  • additional means for air injection and/or air withdrawal can be arranged.
  • the soil can be rained with water, to which nutrients can be added with a raining intensity of 2 to 10 cm per day (of course, the intensity of the raining will be dependent on the type of soil).
  • the percolate is treated in a cleaning device, which consists of a biological system, a physical/chemical system or a combination of both.
  • the liquid can again be spread over the depot, while the excess is drained off (for instance in case of a non covered system this will hold for the excess of rain water).
  • the principle of this process is schematically given in Fig. 2.
  • microbiological processes occurring in the soil, can result in decomposition of contaminants whereas contaminants or its decomposition products are extracted by means of the recirculation water.
  • the water with its extracted contaminating material is collected by means of a drain system, after which it is led to a cleaning device.
  • This device can consist of a biological purification (for instance bio-rotors or other mud-carry up systems) or a physical chemical purification (for instance deposit, flotation, ion-exchange, resin adsorption, active carbon, stripper) or a combination of these systems. Then the cleaned liquid is once again spread over the depot.
  • an oxydant can be added to the circulation liquid, for instance nitrogen peroxide, ozon, for promoting chemical and/or biological oxidation.
  • Period I no air injection
  • Period II air injection Conclusion: Especially in the deeper part the air injection results in promoting the degradation of oil components

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microbiology (AREA)
  • Soil Sciences (AREA)
  • Processing Of Solid Wastes (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Road Signs Or Road Markings (AREA)
  • Biological Treatment Of Waste Water (AREA)

Claims (12)

  1. Verfahren zur Erdbodenreinigung, wobei der zu behandelnde Erdboden auf eine undurchlässige Bodenfläche in einer Lagerstätte, in einer Schicht von einer Dicke von 1 bis 2 m, gebracht wird, Wasser oder rezirkuliertes Wasser, wenn gewünscht mit hinzugefügten Nährstoffen, über den Erdboden gesprüht und von dem Boden des Lagerplatzes Wasser aus dem Erdboden mit Hilfe eines Ablaufsystems abgezogen wird, dadurch gekennzeichnet, daß das aus dem Erdboden abgezogene Wasser einem biologischen und/oder physikalisch chemischen Reinigen unterworfen wird, ein Übermaß an Wasser, wenn überhaupt welches, abgezogen wird, und der Rest wieder dem Erdboden zugeführt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß Mikro-Organismen und/oder Extraktstoffe oder Reinigungsmittel dem rezirkulierten Wasser hinzugefügt werden.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß Stickstoff und/oder Phosphat und/oder weitere Nährstoffe dem rezirkulierten Wasser hinzugefügt werden.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der zu reinigende Erdboden überdeckt ist.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Erdboden periodisch bearbeitet wird.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß Luft injiziert oder aus dem Erdboden abgezogen wird.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß Luft zugeführt oder während des Abbaus von biologisch abbaubaren Verunreinigungen abgezogen wird.
  8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß Stickstoff und/oder Phosphat und/oder weitere Nährstoffe der rezirkulierten Flüssigkeit hinzugeführt werden.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß Düngemittel, Kompost oder Schlamm dem zu reinigenden Erdboden hinzugefügt wird.
  10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß Luft während der Extraktion und des Abbaus der Verunreinigungen hinzugefügt wird.
  11. Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß ein Oxydationsmittel dem Zirkulationswasser hinzugefügt wird.
  12. Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß Luft, die aus dem Erdboden abgezogen wird, gleichzeitig mit dem abgezogenen Wasser in einer kombinierten Wasser-/Luftbehandlungseinheit biologisch behandelt wird.
EP19900200125 1989-01-17 1990-01-17 Verfahren zur Erdboden-Reinigung Revoked EP0379261B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90200125T ATE89199T1 (de) 1989-01-17 1990-01-17 Verfahren zur erdboden-reinigung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8900102 1989-01-17
NL8900102A NL8900102A (nl) 1989-01-17 1989-01-17 Werkwijze voor het reinigen van grond.

Publications (2)

Publication Number Publication Date
EP0379261A1 EP0379261A1 (de) 1990-07-25
EP0379261B1 true EP0379261B1 (de) 1993-05-12

Family

ID=19853966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900200125 Revoked EP0379261B1 (de) 1989-01-17 1990-01-17 Verfahren zur Erdboden-Reinigung

Country Status (6)

Country Link
EP (1) EP0379261B1 (de)
AT (1) ATE89199T1 (de)
DE (1) DE69001553T2 (de)
DK (1) DK0379261T3 (de)
ES (1) ES2041114T3 (de)
NL (1) NL8900102A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04507371A (ja) * 1989-08-18 1992-12-24 テルデコン・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング・エルトデコンタミニールング 汚染物を洗浄し調製するための方法
DE4112867A1 (de) * 1991-04-19 1992-10-22 Dyckerhoff & Widmann Ag Verfahren zum dekontaminieren von mit schadstoffen verunreinigten boeden
CA2089639A1 (en) * 1991-08-13 1993-02-14 Lauren M. Purcell Surfactant selection method for the extraction of chemical pollutants from soils
NL9101678A (nl) * 1991-10-04 1993-05-03 Te Pas Milieutechniek B V Inrichting voor het reinigen van grond.
DE4312351A1 (de) * 1993-04-16 1994-10-20 Biolipsia Gmbh Fuer Biolog Che Verfahren zur Dekontaminierung schwermetall- und kohlenwasserstoffbelasteten Boden und Bauschutts
DE9400225U1 (de) * 1994-01-08 1994-03-03 Hydrogeologie GmbH, 99734 Nordhausen Anlage zur biologischen Schüttgut- und Abwasserreinigung
SI22156A (sl) * 2005-11-18 2007-06-30 Domen Lestan Ciscenje tal in sedimentov z uporabo pospesene oksidacije

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713340A (en) * 1984-06-13 1987-12-15 Regents Of The University Of Minnesota Biodegradation of pentachlorophenol
NL8500445A (nl) * 1985-02-15 1986-09-01 Heidemij Uitvoering Werkwijze en inrichting voor het biologisch zuiveren van verontreinigde grond.
DE3525701A1 (de) * 1985-07-18 1987-01-22 Didier Werke Ag Verfahren zur sanierung von deponien
NL8603266A (nl) * 1986-12-23 1988-07-18 Projectbureau Voor Ind Afval P Werkwijze voor het behandelen van verontreinigde grond.
ATE74542T1 (de) * 1987-01-15 1992-04-15 Hoelscher Richard Einrichtung zum einlagern und behandeln von mit schadstoffen belasteten boeden.
DE3720833C2 (de) * 1987-02-10 1997-01-16 Xenex Ges Zur Biotechnischen S Verfahren zur biologischen Rekultivierungsbehandlung von mit Xenobiotica kontaminiertem Erdreich und Anlagen zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
ATE89199T1 (de) 1993-05-15
DK0379261T3 (da) 1993-06-07
DE69001553D1 (de) 1993-06-17
ES2041114T3 (es) 1993-11-01
NL8900102A (nl) 1990-08-16
DE69001553T2 (de) 1993-08-19
EP0379261A1 (de) 1990-07-25

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